*{
    color:white
}
:host(.active) .content{
    
    margin-top:20px;
    background:rgba(0,0,0,30%);
}
:host{
    display:block
}
.content{
    width:100px;
    height:100px;
    background:rgba(0,0,0,20%)
}

::slotted([slot="container"]){
    display:none
}

::slotted(.active){
    display:block
}